notadictionary.com
今朝お母さんに「そんなにスカート短いと…
→ “This morning, my mom said to me, 'If your skirt is that short...'”
今朝 kesa = this morning (noun)
お母さん okaasan = mom (noun)
母 ka = mother
さん san = honorific suffix
に ni = to / at (particle indicating direction or target)
「 = opening quotation mark (punctuation)
そんな sonna = that / such (adjective/determiner)
に ni = if / when (particle introducing a condition)
スカート su ka-to = skirt (loanword noun)
短い mijikai = short (i-adjective)
と to = if / then (conditional particle)
… = ellipsis (indicates trailing off)