Hi- about a month ago I purchased what I believe is an echeveria "tippy" (could be wrong, though). It's bottom leaves were translucent & yellowish, so I assumed it had been over watered in the store & removed . I repotted it & have watered her once in the month. All seemed to be well until I recently noticed a lot of darkening on the tips. At 1st, I thought it was just part of the process, that she was making herself pretty w/ deeper red tips. Now though, I see that the bottom leaves are, once again, translucent & yellow (again, I've watered her once all month, waiting until potting mix was completely dry). Along with that are what appears to be burns- unsightly dark brown spots in the lower leaves & strewn about through the rest of the plant. The very center of the rosette now has a few dark brown tips, along with one of her two babies turning dark brown & beginning to (very quickly) dry out. Any advice/suggestions/help/even criticism would be helpful, as I'm very new to the gardening world & desperately want to do it right. Not sure if this matters much, but all my plants are indoors in East facing windows & this one is in a mixture of cactus potting mix &

. Out of all my plants, this poor girl is doing the worst. Thank you so much, in advance, if anyone feels so inclined as to read this & reply to me. I apologize for the blurry pics & for the long-winded post.

The brown you see in between the leaves is the baby. He was doing great until yesterday, when I found him like this. The other (smaller) baby is now beginning to darken as well on the tips (not red, but brown)