Hey man, as some who has both 5/65 and 6* R2 versions of her, I would go the 5* - The indestructible will save you a lot as it's about 12-15 seconds and if you choose suicides you get no recoil when you launch that nasty Sp2. The 6* is still good but the indestructible especially in Act 6 exploration will save you.
appreciate the responses but community is split. right now leaning towards 5r5 for dupe and one fewer t5b cost.