SIL Vent - New situation and cannot believe it

So a few days ago I posted about my SIL constantly asking for hands outs, ever since she was pregnant. Quick recap: as soon as she found out she was pregnant she did a blood test for the gender so ppl could start buying her stuff. She asked me to plan her baby shower (I was providing my home and and the food) and told me she’d only invite 20 but the FB invite ended up being for 50ppl plus their family members. She invited that many bc “she wanted to see how much she could get off her registry”. When I told her that was too much and she’d have to figure out something for the food and place she changed her invite and it was back to the 50 some, with ppl declining. Then she kept adding more bc others were declining and she wanted to get enough off her registry. When I told her to stop that she made her registry public on FB so “ppl could get stuff for her and baby if they wanted”. After her baby arrived one of her sisters or her mom was at her apartment every night for 2 weeks to help, even though she has a husband. Her son will be 1 next month and one of her sisters are still there at least every weekend, all weekend long to help. She has a 2 bedroom apartment. There isn’t really much to “help with”. She bought an expensive car at tax time with high payments so she had to go back to work. She couldn’t believe how much she’d have to pay for day care, and was outraged a friend offered to watch him but for $25 a day. She thought family members would do it for free but we all work or her sisters are in school. My husband and I also gave her money a few times because they “really needed it for groceries and things for the baby” but then we found out that was being used to buy her husband cigarettes and video games. Her son turns 1 next month and she asked if we could use my house for the party and I said sure. But then she sent me pics of the cake and all the decorations she wants ME to get. I told her if that’s what she wants she needs to buy it and she hasn’t said anything since.

Now that brings us to today: I found out last night that she was pregnant and miscarried. She said she was only 4-5 weeks but she also said you could see the small shape of a baby so I’m guessing she was further. We believe it’s bc she has issues with her thyroid. She won’t get that checked again until June but she wants to try again NOW. Miscarriages are hard and I never want to see anyone go through that. I know she is hurting and I hurt for her on that too. But I cannot believe she wants to get pregnant again. First off I think she should at least wait until she gets her thyroid checked but she doesn’t want to wait. And secondly idk how she plans to afford or even take care of another kid. She still asks for money and help but we refuse, and she’s always needed her sisters there now to help with the baby and her apartment. I know you don’t have to be rich or well off to have a family and I’m not saying those should be requirements but she is just not in a position to have another baby. But she’s going to try too anyways. I just think that is so dumb and had to let it out.