she makes me buy [condoms] when i fuck baelz she only lets me get her pregnant

Rats have a gestation period of less then a month and an average litter size in the 6-9 range, smart Kronii trying to keep the beginning completion fair or she's be hopelessly outmatched.

rrat and Kronii keeping track of who's had the most kids

AAAAAAAAAAAAAHHHHH SEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEXXXXXXXXXX

It would an absolute one-sided beatdown unless Kronii cheats with her time powers. In the 9 months it'd take Kronii normally to have one pregnancy, rrat could have 9, with an average of 6X Kronii's average litter size assuming she isn't taking fertility drugs that increase the chance of multiples.

Rrat laughing at Kronii because she'll never be able to reach her fecundity
Brag about her gestational time of three months
When questioned about why she's lording this over a (currently pregnant) Kronii, and asked if she's planning on having kids, or why she's making this a competetion, she realizes how weird it sounds
Face goes as red as her hair and she disappears
Kronii and Fauna tease her about it for months

She shows up 3 weeks later looking third trimester with octuplets.
Despite her smaller size her belly is considerably larger than Kronii's
She rubs their bellies together and both of their children begin violently kicking
Kronii winces and nearly pisses herself
Rrat orgasms from the stimulation

Win/win