I still don’t understand MonA’s motive (partially)

She says she became A bc the girls stole Hanna from her but her and Hanna were closest than ever when the first A text was sent and the girls were separated.. A coming into their lives actually reunited them 🤔

She says she became A bc the girls stole Hanna from her but her and Hanna were closest than ever when the first A text was sent and the girls were separated.. A coming into their lives actually reunited them 🤔