What the hell?!

So my best friend who lives at home with her 2 kids (7 and 11) hired me to work with her 7 year old son while he’s online. She’s a single mom and just started school herself(which she was frustrated and said she wanted to quit the 1st day in) . She begged me to come and help so I agreed. Im there from 8-12 Tuesday and Thursday. He is an active child(most likely undiagnosed adhd- mom is going to get him tested. NOTHING wrong with it just want to get him the help he needs so he can be successful without feeling overwhelmed which is what is going on) so I help keep him on track, work on assignments with him and allow him breaks to regroup in between sessions. In the later parts he refuses to sit still and is all over the place. I sit next to him and whatever he needs help on we do after.

We talked and agreed on $30(and if I needed more we would discuss). We did a test run Monday- he was AWFUL and she kept apologizing for him. Both her and his grandma threatened daycare if he didn’t stop misbehaving. I said it was ok and we would get into our schedule once it’s just us.

Tuesday comes and everything is good. He’s doing well and even grandma is impressed.

I told her this Thursday I was unavailable (had a prior engagement) but said Tuesday/Thursday is blocked out for him. She RUDELY texted “what are you doing Thursday” I said I have something planned with my mom before we started this. She said she was just going to quit and do it herself. Then texted “I’m just pissed you’re not coming Thursday” Her mom (who wants NOTHING to do with his schooling) says $30 is too much 😑 I said if she can’t miss class I would switch my mom to another day- but her mom doesn’t want me to be get paid more. I was the only one supporting her in her going back to school. We never discussed what days she has class or a permanent set schedule. I didn’t want to do this because I didn’t want our friendship ruined but I felt bad since she had no support from her family. Her brother even says her son is wild and out of control.

My last text basically said I’m sorry this didn’t work out and I hope it doesn’t ruin our friendship. I’m 29 no kids but nanny for my sister and she’s 31 w/ 2 kids. Right now my feelings are hurt because I feel like they think my time isn’t worth much. I wanted to charge more but I didn’t want to overcharge because I know she’s a single mom 😩 any advice? Did I charge too much? Should I reach out? I’m really hurt as shes my best friend(4 years) and this is the 1st time we’ve been in a non talking stage.

HELP 😢