The following is hand-written though the writing it fairly messy:
Ms. Ella,
Heard you like these kinds of notes, so I thought I'd give it a try. Not the best at writin', so I hope you can read it okay.
Thought you might like some company at that brunch thing on Saturday if you're goin'. I'd also be happy to keep an eye on Max for ya if you're already headin' out to it.