Am I thinking too much into it ?

Okay , so I know this teen girl and I started hanging out with her really often because has a rough past and I felt like she needed a big sister. My husband and I even thought to invite her to live with us to give her a safe space to be in. The thing is that I started noticing some inconsistencies in what she would tell me and what she told others . I’m not the only adult that are trying to help her so she talk with multiple people and some of those woman have asked me if I trust what she says . Anyways , not long ago she got raped ( not being this the first time ) and around two weeks later she told me she was pregnant . It shocked me but I was getting ready to help her the more I could . Someone in our group of friends requested her to take a digital test so we could know how far along she was and the test was negative but we didn’t think too much of it because those Tests are not as sensitive and she said she took 3 First response test and they were positive prior to that ( she told another friend that she only took 1 and this is when I started questioning ) Anyways , we started telling her what she needed to do so she could get ready . Get a full time job , driver licence , start saving , going to this teen mom group that helps young moms to grow and take responsibility etc . She started getting annoyed I could sense. She wanted to talk more about the the fun stuff of having a baby than anything else . So that was a Monday when we talked about those stuff . Her period wasn’t supposed to come until 5 days later or something like that . So 4 days later , we were having a casual conversation about something else and she mentioned college and how she wanted to go for this year . Then she told me she had a chemical pregnancy and she went thru 13 tampons . So no baby anymore . That was when I started doubting more because 13 tampons is a lot . She should have been at the hospital and staying overnight . So I don’t want to talk about this with my other friends because I don’t want to sound like I don’t have empathy towards her but I’m struggling believing her now . I do want to support and help her if she needs it but I don’t know why I’m doubting a lot . Thoughts ?

****RESPONDING SOME OF THE COMMENTS: *****sorry guys I posted anonymously just in case she or someone I know is using this app .

I have to clarify She is NOT staying with me so I don’t have other way to get my facts other than her telling me .

Yes I know a chemical wouldn’t land you to the hospital overnight but she said she went thru 13 tampons so I think that’s a pretty heavy flow to be considered normal that’s why I thought about the hospital stay .

No, Im taking a semi brake from that relationship because of this and other stuff that are making me question her a lot