How can I(M21) trust her(F21) past without compromising my values?

So relationship with nice person since 9 month and I thought she told me everything about her past which made sense she said everything to me and never went against my will long story short you are at a fest her phone got so I got it to fix and upon having a text I got a memory card filled with photos of her presumed but upon digging further I found out about her past she told me she was in a very toxic relationship and that the guy kept asking for inappropriate things but she also said that upon repeated asking him to leave him he would give sucidal threats (which i confirmed) the point being i found out ss and other photos of them where she was happy and nice just looked like any other relationship ... She gave him 2nd chances so she said after i confronted about it yesterday up until this time she kept telling me that she wanted to leave but he didn't want to leave she claims that their toxic relationship . Moreover she had another boyfriend amidst of their relationship (which didn't last as the guy was double dating hum) she told me that she had attraction with this 2nd person but same as the first one she didn't disclose details which I later found out . After being cheated by the 2nd person she was again with the 1st person as she heard rumors of such sucidal attempts and as she calims that she faked being with him in this part ,( I found out that they went on dates , celebrated v day etc all of which i know because I found those photos).She claims not have a physical relationship with any of them which I can confirm as I was physically with her but when I asked why she downplayed this entire thing even after repeated asking that i would accept her past if she came clean first, to which she said she wanted not to hurt me and that she deserves another chance to fix her mistakes (which I am ok for ) but I am guy who values honesty ,loyalty and trust more that anything .. I am scared that the same might just happen to me sometime in the future .. i know love can be blinding to I need your help I don't wanna loose this person but I can't also be blinded . Please help guys 🙏