Sure. You'd just need to:
1) Forge her signature (commit a felony).
2) Hope your forgery is sufficiently accurate
3) Hope that she (intended voter) doesn't call election office and ask about why she never got a ballot (in which case that mail ballot would be deactivated, and it would be investigated if returned)
4) Hope that she doesn't send back a replacement ballot or show up to vote in person (in which case the same as #3 would happen).
But more importantly, instead of showing us a picture of a mail ballot (which could just be from anywhere and is not evidence of material fraud), why don't you answer:
Where are the mass arrests? Trump has been in office for 18 months now. And there have been lots of ambitious Republican prosecutors and sheriffs in office for 6 years since the 2020 election.
And together they've scraped up a handful of individual voters. A few noncitizens vote. A few people voting in multiple jurisdictions.
Hundreds of thousands of hours have been searching. And yet...
What you have is, at best, evidence of a clerical error that yielded no harm.
Whoever the next Democratic president is, they better not start talking about forgiveness and pardons to unify the country. This country will unify behind prosecutions and prison sentences. We're still fighting because the Confederacy was never properly punished. End the cycle.
Trump literally trumped the law. No one is ever going to see Donald Trump get the justice he deserves for all of the crimes he's committed. Why? It's bad. It's REALLY fucking BAD. Listen:
I think the normalization of vulgarity and barbarism in politics is bad, but Trump and the new right mainstreamed it. When Rob Reiner and his wife were brutally murdered, Trump danced on their graves, and the right thought it was hilarious. When he mocks widowers, the right thinks it's hilarious. When JD Vance was asked if he would apologize for slandering Alex Pretti as an assassin after the feds killed him in cold blood, Vance smirked to show just how much he does not care about Americans being murdered by his administration, and the right loved that too. You can't break all the rules of decorum, say "Fuck your feelings," which the right has, and then cry like a baby when people treat you the way you treat them.