MIL drama

ShaNae.

So for over the past year my fiance mom has been staying with us ! We provide everything as far as money wise because shes unemployed and no income ! So we pay her bills as well ! We noticed everytime we go around family or friends she bad talks us and we argue but always try to look past it ! So yesterday thanksgiving she did it again , talking shit about us in our own home and i just broke today i put her out ! And she went to my brother in laws other sons house but i kinda feel bad ? Should i feel bad ? Im just like how can you talk shit about the people who are helping you ?